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| | The Mammoth Times (Site not responding. Last check: 2007-10-26) |
 | | It is Devils Postpile (as the formations have been dubbed) and it is located right in our own back yard, and according to the National Park Service, reopened to visitors on for the season Wednesday, June 27. |
 | | While it may look ominous, in actuality Devils Postpile is a dark cliff of columnar basalt near Mammoth Mountain, created by a lava flow sometime between less than 100,000 years ago (according to current potassium-argon dating) to 700,000 years ago (according to other dating methods). |
 | | Devils Postpile was once part of Yosemite National Park, but discovery of gold near Mammoth Lakes, Calif. prompted a boundary change that left the Postpile on adjacent public land. |
| mammothtimes.com /articles/2006/07/05/this_week/features/devilspostpileopens.txt (762 words) |
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